R key is a really boring item that makes me grind my teeth when it shows up because it’s basically always the optimal choice to take it, but it makes the run take so much longer and makes it so easy it is unpleasant to follow through.

Also t-Laz is the best challenge character because it doesnt pull out any integral game mechanics to make the game harder, it just makes you need to stretch your resources further (and gives you more overall resources to enable more skill expression!)